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FJR Motorcycle Forums
Technical & Mechanical Problems
Pulsed Air Removal CAUTION
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<blockquote data-quote="jstewart" data-source="post: 550672" data-attributes="member: 13630"><p>1. If you do nothing else but remove the pair system (block injection of air into exhaust) yes the O2 sensor will see a slightly richer mixture.</p><p></p><p>2. Will it cause the motorcycle to run dangerously lean if nothing else is done--no but the bike will no longer be emissions compliant.</p><p></p><p>3. There is no point in doing this modification except to (A) reduce clutter above engine for ease of servicing ( B) Get accurate exhaust</p><p></p><p>O2 readings (uncontaminated by pair air injection) for dyno tuning. I use a innovate datalogger to tune F/A ratios and the O2</p><p></p><p>exhaust sensor readings would be thrown off by the pair system injecting raw air into the exhaust system ahead of the O2 sensor.</p><p></p><p>I see no reason to do this mod unless you intend to tune the fuel injection on the bike with the barbarian mod, a power commander</p><p></p><p>or another aftermarket fuel injection tuning device.</p></blockquote><p></p>
[QUOTE="jstewart, post: 550672, member: 13630"] 1. If you do nothing else but remove the pair system (block injection of air into exhaust) yes the O2 sensor will see a slightly richer mixture. 2. Will it cause the motorcycle to run dangerously lean if nothing else is done--no but the bike will no longer be emissions compliant. 3. There is no point in doing this modification except to (A) reduce clutter above engine for ease of servicing ( B) Get accurate exhaust O2 readings (uncontaminated by pair air injection) for dyno tuning. I use a innovate datalogger to tune F/A ratios and the O2 exhaust sensor readings would be thrown off by the pair system injecting raw air into the exhaust system ahead of the O2 sensor. I see no reason to do this mod unless you intend to tune the fuel injection on the bike with the barbarian mod, a power commander or another aftermarket fuel injection tuning device. [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Pulsed Air Removal CAUTION
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